(PHP 4 <= 4.2.3, PECL cybercash:1.18)
cybercash_encr — Cybercash encrypt
Encrypts information.
The merchant key.
The session key.
URL encoded string of value pairs, i.e. order-id=12345&amount=USD+12.34&card_number=......
The function returns an associative array with the elements "errcode" and, if "errcode" is FALSE, "outbuff" (string), "outLth" (long) and "macbuff" (string).